Anti-deflagration foam fire extinguishing system with proportional mixing function

Abstract

The utility model discloses an anti-deflagration foam fire extinguishing system with a proportional mixing function, which relates to the technical field of fire fighting equipment and comprises a liquid mixing device, a gas-liquid mixing device, a water source supply device, a foam supply device, a fire extinguishing agent supply device and a spraying device, the water source supply device comprises fire-fighting water storage equipment and a fire-fighting water flow control pipeline, the fire-fighting water flow control pipeline is used for quantitatively conveying fire-fighting water, the foam supply device comprises foam liquid storage equipment and a foam liquid flow control pipeline, and the foam liquid flow control pipeline is used for quantitatively conveying foam liquid. The fire extinguishing agent supply device comprises a fire extinguishing agent storage device and a fire extinguishing agent flow control pipeline, the fire extinguishing agent flow control pipeline is used for quantitatively conveying a fire extinguishing agent, and the problem that when an existing foam fire extinguishing system is used, due to the secondary detonation phenomenon, fire rebound, flame spreading or explosion is caused, and the fire extinguishing effect is affected is solved. And secondary injury to firefighters or articles is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to an anti-explosion foam fire extinguishing system with a proportional mixing function. Background Art

[0002] Foam fire extinguishing system is a common fire extinguishing equipment used to extinguish liquid fires. It sprays foam liquid to form a layer covering the surface of the fire source, preventing oxygen from entering and extinguishing the flames. The formation of foam can inhibit the spread of fire, thereby effectively extinguishing the fire. Foam fire extinguishing systems are commonly used in places prone to liquid fires, such as auto repair shops, chemical plants, oil depots, and docks. They can be triggered by manual or automatic control to ensure timely extinguishing of fires when they occur. Foam fire extinguishing systems can be classified into different categories according to container type, spraying method, foam type, etc. Common types of foam include firefighting foam and chemical foam. Firefighting foam is usually a non-toxic, odorless, colorless liquid that is harmless to the human body.

[0003] The foam fire extinguishing system in the prior art generally extinguishes the fire by mixing water with fire foam, then injecting compressed air through an air compressor, and then spraying the mixture of compressed air, water and fire foam onto the fire scene. Since there is oxygen in the air, the compressed air will also contain oxygen. In the actual fire extinguishing process, the use of the compressed air foam fire extinguishing system may cause secondary deflagration when encountering an open flame due to the oxygen in the mixed liquid, which may cause the fire to rebound, the flame to spread or an explosion to occur, causing secondary damage to firefighters and surrounding objects.

[0004] In the invention with application number: CN200910131152.4 and publication number: CN101543669B, a vehicle compressed air foam fire extinguishing system is disclosed, including: a water supply device, a foam supply device, a compressed air supply device, a water-foam mixture pipeline and a foam spraying device; wherein the foam supply device includes an electric plunger foam pump, a water-foam mixing ratio automatic control module and a flow meter installed on the water-foam mixture pipeline. When it is in use, there is still a problem that secondary deflagration may occur, thereby causing fire rebound, flame spread or explosion, causing secondary damage to firefighters or objects. Utility Model Content

[0005] Based on this, in order to address the above problems, the utility model proposes an anti-explosion foam fire extinguishing system with a proportional mixing function, which solves the problem that the current compressed air foam fire extinguishing system will experience secondary deflagration during use, thereby causing fire rebound, flame spread or explosion, causing secondary damage to firefighters or objects.

[0006] The technical solution of the utility model is:

[0007] An anti-explosion foam fire extinguishing system with proportional mixing function, comprising:

[0008] A liquid mixing device, the liquid mixing device is used to mix fire water and foam liquid to produce mixed foam liquid;

[0009] A gas-liquid mixing device, the gas-liquid mixing device is used to mix the mixed foam liquid and the fire extinguishing agent to produce a mixed fire extinguishing foam liquid;

[0010] A water source supply device, the water source supply device includes a fire water storage device and a fire water flow control pipeline, and the fire water flow control pipeline is used to quantitatively transport fire water;

[0011] A foam supply device, the foam supply device includes a foam liquid storage device and a foam liquid flow control pipeline, and the foam liquid flow control pipeline is used for quantitatively conveying the foam liquid;

[0012] A fire extinguishing agent supply device, the fire extinguishing agent supply device includes a fire extinguishing agent storage device and a fire extinguishing agent flow control pipeline, and the fire extinguishing agent flow control pipeline is used for quantitatively conveying the fire extinguishing agent;

[0013] Spraying device, which is used to spray the mixed fire extinguishing foam liquid to the fire scene;

[0014] Among them, the fire water storage equipment is connected to one end of the liquid mixing device through the fire water flow control pipeline, the foam liquid storage equipment is connected to one end of the liquid mixing device through the foam liquid flow control pipeline, one end of the liquid mixing device is connected to one end of the gas-liquid mixing device, the fire extinguishing agent storage equipment is connected to one end of the gas-liquid mixing device through the fire extinguishing agent flow control pipeline, and one end of the gas-liquid mixing device is connected to the sprinkler.

[0015] Preferably, the liquid mixing device is provided with a fire water inlet, a foam liquid inlet and a mixed foam liquid outlet, the gas-liquid mixing device is provided with a mixed foam liquid inlet, a fire extinguishing agent inlet and a mixed fire extinguishing foam liquid outlet, the fire water storage equipment is connected to the fire water inlet on the liquid mixing device through a fire water flow control pipeline, the foam liquid storage equipment is connected to the foam liquid inlet on the liquid mixing device through the foam liquid flow control pipeline, the mixed foam liquid outlet on the liquid mixing device is connected to the mixed foam liquid inlet on the gas-liquid mixing device, the fire extinguishing agent storage equipment is connected to the fire extinguishing agent inlet on the gas-liquid mixing device through the fire extinguishing agent flow control pipeline, and the mixed fire extinguishing foam liquid outlet on the gas-liquid mixing device is connected to the spraying device.

[0016] Preferably, the fire water flow control pipeline includes a fire water delivery pipe and a fire water manual valve, a fire water solenoid valve, a fire water pump and a fire water flow control valve arranged in sequence on the fire water delivery pipe, the fire water delivery pipe is provided with a fire water manual valve at one end connected to the fire water storage equipment, and the fire water delivery pipe is provided with a fire water flow control valve at one end connected to the fire water inlet on the liquid mixing device.

[0017] Preferably, the foam liquid flow control pipeline includes a foam liquid delivery pipeline and a foam liquid manual valve, a foam liquid solenoid valve, a foam liquid pump and a foam liquid flow control valve which are arranged in sequence on the foam liquid delivery pipeline, one end of the foam liquid delivery pipeline provided with the foam liquid manual valve is connected to the foam liquid storage equipment, and one end of the foam liquid delivery pipeline provided with the foam liquid flow control valve is connected to the foam liquid inlet on the liquid mixing device.

[0018] Preferably, the fire extinguishing agent flow control pipeline includes a fire extinguishing agent delivery pipeline and a fire extinguishing agent pressure reducing valve, a fire extinguishing agent manual valve, a fire extinguishing agent solenoid valve and a fire extinguishing agent flow control valve which are sequentially arranged on the fire extinguishing agent delivery pipeline, one end of the fire extinguishing agent delivery pipeline provided with the fire extinguishing agent pressure reducing valve is connected to the fire extinguishing agent storage equipment, and one end of the fire extinguishing agent delivery pipeline provided with the fire extinguishing agent flow control valve is connected to the fire extinguishing agent inlet on the gas-liquid mixing device.

[0019] Preferably, the liquid mixing device comprises a liquid mixing body and a first mounting bracket, the liquid mixing body is mounted on the first mounting bracket, a first flow channel is provided in the liquid mixing body, a fire water inlet, a foam liquid inlet and a mixed foam liquid outlet are provided on the liquid mixing body and are respectively communicated with the first flow channel, wherein the fire water inlet and the mixed foam liquid outlet are respectively provided at two ends of the liquid mixing body, and the foam liquid inlet is provided at the top of the liquid mixing body;

[0020] A first extension tube is provided in the foam liquid inlet, one end of the first extension tube is fixedly connected to the inner wall of the foam liquid inlet, and the other end extends into the first flow channel, and a first inclined section is provided on one end of the first extension tube located in the first flow channel;

[0021] A first blocking member is arranged in the fire water inlet, the first blocking member is connected to the inner side wall of the fire water inlet, and a first communicating port is arranged on the first blocking member, the first communicating port is communicated with the first flow channel.

[0022] Preferably, the gas-liquid mixing device comprises a gas-liquid mixing body and a second mounting bracket, the gas-liquid mixing body is mounted on the second mounting bracket, a second flow channel is provided in the gas-liquid mixing body, a mixed foam liquid inlet, a fire extinguishing agent inlet and a mixed fire extinguishing foam liquid outlet are arranged on the gas-liquid mixing body and are respectively communicated with the second flow channel, wherein the mixed foam liquid inlet and the mixed fire extinguishing foam liquid outlet are respectively arranged at two ends of the gas-liquid mixing body, and the fire extinguishing agent inlet is arranged at the top of the gas-liquid mixing body;

[0023] A second extension pipe is provided in the fire extinguishing agent inlet, one end of the second extension pipe is fixedly connected to the inner side wall of the fire extinguishing agent inlet, and the other end of the second extension pipe extends into the second flow channel;

[0024] A second blocking member is arranged in the mixed foam liquid inlet, the second blocking member is connected to the inner side wall of the mixed foam liquid inlet, and a second communicating port is arranged on the second blocking member, the second communicating port is communicated with the second flow channel.

[0025] Preferably, the fire extinguishing agent is nitrogen, carbon dioxide, heptafluoropropane or perfluorohexanone.

[0026] Preferably, when the fire extinguishing agent is nitrogen or carbon dioxide, a second inclined section is provided on one end of the second extension tube located in the second flow channel.

[0027] Preferably, when the fire extinguishing agent is heptafluoropropane or perfluorohexanone, a steering connecting pipe is provided on one end of the second extension tube located in the second flow channel, an atomizing nozzle is provided at one end of the steering connecting pipe, and the other end is connected to the second extension tube.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] When the utility model is in use, a certain amount of fire water is transported from the fire water storage device to the liquid mixing device through the fire water flow control pipeline, and at the same time a certain amount of foam liquid is transported from the foam liquid storage device to the liquid mixing device through the foam liquid flow control pipeline, and then the fire water and the foam liquid are mixed through the liquid mixing device to produce a mixed foam liquid, and then the mixed foam liquid is mixed with a fire extinguishing agent through the gas-liquid mixing device to produce a mixed fire extinguishing foam liquid, a certain amount of fire extinguishing agent is transported from the fire extinguishing agent storage device to the gas-liquid mixing device through the fire extinguishing agent flow control pipeline, and then the mixed fire extinguishing foam liquid is transported to the spraying device through the gas-liquid mixing device, and finally the mixed fire extinguishing foam liquid is sprayed to the fire scene through the spraying device to extinguish the fire.

[0030] The utility model realizes the proportional mixing of fire water, foam liquid and fire extinguishing agent, improves the fire extinguishing effect, and realizes the quantitative delivery of fire water, foam liquid and fire extinguishing agent by arranging the fire water flow control pipeline, the foam liquid flow control pipeline and the fire extinguishing agent flow control pipeline, thereby ensuring that the mixed liquid is mixed in a certain proportion; at the same time, by arranging the spray device, the utility model has the injection function, can quickly extinguish the fire, and reduce the possibility of fire spreading; using the fire extinguishing agent instead of compressed air can enhance the fire extinguishing effect, effectively eliminate the fire source, and reduce the risk of secondary explosion.

[0031] The utility model solves the problem that the current compressed air foam fire extinguishing system may cause secondary deflagration when in use, thereby causing fire rebound, flame spread or explosion, causing secondary damage to firefighters or objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the system framework structure of an anti-explosion foam fire extinguishing system with a proportional mixing function described in an embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the system structure of an anti-explosion foam fire extinguishing system with a proportional mixing function described in an embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram of the liquid mixing device and the gas-liquid mixing device described in the embodiment of the utility model;

[0035] Figure 4 The cross-sectional structure diagram of the liquid mixing device and the gas-liquid mixing device described in the embodiment of the utility model is Figure 1 ;

[0036] Figure 5 The cross-sectional structure diagram of the liquid mixing device and the gas-liquid mixing device described in the embodiment of the utility model is Figure 2 ;

[0037] Description of reference numerals:

[0038] 10-liquid mixing device, 100-fire water inlet, 101-foam liquid inlet, 102-mixed foam liquid outlet, 103-liquid mixing body, 104-first mounting bracket, 105-first flow channel, 106-first extension pipe, 107-first inclined section, 108-first blocking member, 109-first connecting port, 20-gas-liquid mixing device, 200-mixed foam liquid inlet, 201-fire extinguishing agent inlet, 202-mixed fire extinguishing foam liquid outlet, 203-gas-liquid mixing body, 204-second mounting bracket, 205-second flow channel, 206-second extension pipe, 207-second blocking member, 208-second connecting port, 209-second inclined section, 210-steering connecting pipe, 211-atomizing nozzle, 30-water supply device, 31-fire Water storage equipment, 32-fire water flow control pipeline, 300-fire water delivery pipeline, 301-fire water manual valve, 302-fire water solenoid valve, 303-fire water pump, 304-fire water flow control valve, 40-foam supply device, 41-foam liquid storage equipment, 42-foam liquid flow control pipeline, 400-foam liquid delivery pipeline, 401-foam liquid manual valve, 402-foam liquid solenoid valve, 403-foam liquid pump, 404-foam liquid flow control valve, 50-fire extinguishing agent supply device, 51-fire extinguishing agent storage equipment, 52-fire extinguishing agent flow control pipeline, 500-fire extinguishing agent delivery pipeline, 501-fire extinguishing agent pressure reducing valve, 502-fire extinguishing agent manual valve, 503-fire extinguishing agent solenoid valve, 504-fire extinguishing agent flow control valve, 60-sprinkler. DETAILED DESCRIPTION

[0039] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0040] Example:

[0041] like Figure 1 As shown, in order to solve the above problems, this embodiment discloses an anti-explosion foam fire extinguishing system with a proportional mixing function, comprising:

[0042] The liquid mixing device 10 is used to mix fire water and foam liquid to produce mixed foam liquid;

[0043] A gas-liquid mixing device 20, the gas-liquid mixing device 20 is used to mix the mixed foam liquid and the fire extinguishing agent to produce a mixed fire extinguishing foam liquid;

[0044] A water source supply device 30, the water source supply device 30 includes a fire water storage device 31 and a fire water flow control pipeline 32, and the fire water flow control pipeline 32 is used for quantitatively transporting fire water;

[0045] A foam supply device 40, the foam supply device 40 comprises a foam liquid storage device 41 and a foam liquid flow control pipeline 42, and the foam liquid flow control pipeline 42 is used for quantitatively conveying the foam liquid;

[0046] The fire extinguishing agent supply device 50 includes a fire extinguishing agent storage device 51 and a fire extinguishing agent flow control pipeline 52, and the fire extinguishing agent flow control pipeline 52 is used for quantitatively conveying the fire extinguishing agent;

[0047] A spray device 60, which is used to spray the mixed fire extinguishing foam liquid to the fire scene;

[0048] Among them, the fire water storage equipment 31 is connected to one end of the liquid mixing device 10 through the fire water flow control pipeline 32, the foam liquid storage equipment 41 is connected to one end of the liquid mixing device 10 through the foam liquid flow control pipeline 42, one end of the liquid mixing device 10 is connected to one end of the gas-liquid mixing device 20, the fire extinguishing agent storage equipment 51 is connected to one end of the gas-liquid mixing device 20 through the fire extinguishing agent flow control pipeline 52, and one end of the gas-liquid mixing device 20 is connected to the spraying device 60.

[0049] When the utility model is in use, a certain amount of fire water is transported from the fire water storage device 31 to the liquid mixing device 10 through the fire water flow control pipeline 32, and at the same time a certain amount of foam liquid is transported from the foam liquid storage device 41 to the liquid mixing device 10 through the foam liquid flow control pipeline 42, and then the fire water and the foam liquid are mixed through the liquid mixing device 10 to produce a mixed foam liquid, and then the mixed foam liquid is mixed with the fire extinguishing agent through the gas-liquid mixing device 20 to produce a mixed fire extinguishing foam liquid, a certain amount of fire extinguishing agent is transported from the fire extinguishing agent storage device 51 to the gas-liquid mixing device 20 through the fire extinguishing agent flow control pipeline 52, and then the mixed fire extinguishing foam liquid is transported to the spray device 60 through the gas-liquid mixing device 20, and finally the mixed fire extinguishing foam liquid is sprayed to the fire scene through the spray device 60 to extinguish the fire.

[0050] The utility model realizes the proportional mixing of fire water, foam liquid and fire extinguishing agent, improves the fire extinguishing effect, and realizes the quantitative delivery of fire water, foam liquid and fire extinguishing agent by setting the fire water flow control pipeline 32, the foam liquid flow control pipeline 42 and the fire extinguishing agent flow control pipeline 52, ensuring that the mixed liquid is mixed in a certain proportion; at the same time, by setting the spray device 60, the utility model has a spraying function, can quickly extinguish the fire, and reduce the possibility of fire spreading; using the fire extinguishing agent instead of compressed air can enhance the fire extinguishing effect, effectively eliminate the fire source, and reduce the risk of secondary explosion.

[0051] The utility model solves the problem that the current compressed air foam fire extinguishing system may cause secondary deflagration when in use, thereby causing fire rebound, flame spread or explosion, causing secondary damage to firefighters or objects.

[0052] The fire water storage equipment 31 can adopt a fire water storage tank, a fire water storage box or other fire water storage devices in the prior art that can realize the function of the utility model.

[0053] The foam liquid storage device 41 can be a foam liquid storage tank in the prior art that can realize the function of the utility model or other foam liquid storage devices that can realize the function of the utility model.

[0054] The fire extinguishing agent storage device 51 can adopt a fire extinguishing agent storage tank, a fire extinguishing agent storage bottle or other fire extinguishing agent storage devices that can realize the function of the utility model in the prior art.

[0055] The spray device 60 can be a fire-fighting water gun or a fire-fighting water cannon in the prior art that can realize the function of the utility model.

[0056] like Figure 4 or Figure 5 As shown, in order to facilitate the installation and use of the utility model, this embodiment is modified on the basis of the above embodiment, and the difference from the above embodiment is that the liquid mixing device 10 is provided with a fire water inlet 100, a foam liquid inlet 101 and a mixed foam liquid outlet 102, the gas-liquid mixing device 20 is provided with a mixed foam liquid inlet 200, a fire extinguishing agent inlet 201 and a mixed fire extinguishing foam liquid outlet 202, the fire water storage equipment 31 is connected to the fire water inlet 100 on the liquid mixing device 10 through a fire water flow control pipeline 32, the foam liquid storage equipment 41 is connected to the foam liquid inlet 101 on the liquid mixing device 10 through a foam liquid flow control pipeline 42, the mixed foam liquid outlet 102 on the liquid mixing device 10 is connected to the mixed foam liquid inlet 200 on the gas-liquid mixing device 20, the fire extinguishing agent storage equipment 51 is connected to the fire extinguishing agent inlet 201 on the gas-liquid mixing device 20 through the fire extinguishing agent flow control pipeline 52, and the mixed fire extinguishing foam liquid outlet 202 on the gas-liquid mixing device 20 is connected to the spray device 60.

[0057] The mixed foam liquid outlet 102 on the liquid mixing device 10 is flange-connected to the mixed foam liquid inlet 200 on the gas-liquid mixing device 20 .

[0058] The mixed fire extinguishing foam liquid outlet 202 on the gas-liquid mixing device 20 is connected to the sprinkler device 60 through a fire hose.

[0059] like Figure 2As shown, the fire water flow control pipeline 32 includes a fire water delivery pipe 300 and a fire water manual valve 301, a fire water solenoid valve 302, a fire water pump 303 and a fire water flow control valve 304 which are sequentially arranged on the fire water delivery pipe 300. The fire water delivery pipe 300 is provided with a fire water manual valve 301 at one end which is connected to the fire water storage equipment 31, and the fire water delivery pipe 300 is provided with a fire water flow control valve 304 at one end which is connected to the fire water inlet 100 on the liquid mixing device 10.

[0060] One end of the fire water delivery pipeline 300 provided with a fire water flow control valve 304 is flange-connected to the fire water inlet 100 on the liquid mixing device 10 .

[0061] The fire water manual valve 301 is a normally open valve, which is used to emergency stop the fire water delivery; the fire water solenoid valve 302 is a normally closed valve, which is opened only when extinguishing a fire, and is used to deliver fire water; the fire water pump 303 is used to pump the fire water in the fire water storage equipment 31 into the liquid mixing device 10; the fire water flow control valve 304 is used to control the flow of fire water, so that the flow of fire water can be determined.

[0062] like Figure 2 As shown, the foam liquid flow control pipeline 42 includes a foam liquid delivery pipeline 400 and a foam liquid manual valve 401, a foam liquid solenoid valve 402, a foam liquid pump 403 and a foam liquid flow control valve 404 which are sequentially arranged on the foam liquid delivery pipeline 400. One end of the foam liquid delivery pipeline 400 provided with the foam liquid manual valve 401 is connected to the foam liquid storage device 41, and one end of the foam liquid delivery pipeline 400 provided with the foam liquid flow control valve 404 is connected to the foam liquid inlet 101 on the liquid mixing device 10.

[0063] One end of the foam liquid delivery pipeline 400 provided with a foam liquid flow control valve 404 is flange-connected to the foam liquid inlet 101 on the liquid mixing device 10 .

[0064] The foam liquid manual valve 401 is a normally open valve, which is used to emergency stop the foam liquid delivery; the foam liquid solenoid valve 402 is a normally closed valve, which is opened only during fire extinguishing to achieve the delivery of foam liquid; the foam liquid pump 403 is used to pump the foam liquid in the foam liquid storage device 41 into the liquid mixing device 10; the foam liquid flow control valve 404 is used to control the flow of the foam liquid, so that the flow of the foam liquid can be determined.

[0065] When in use, the fire water flow control valve 304 and the foam liquid flow control valve 404 cooperate with each other to control the flow of fire water and the flow of foam liquid, thereby controlling the ratio between fire water and foam liquid, thereby achieving the mixing of fire water and foam liquid in a certain ratio.

[0066] like Figure 2 As shown, the fire extinguishing agent flow control pipeline 52 includes a fire extinguishing agent delivery pipeline 500 and a fire extinguishing agent pressure reducing valve 501, a fire extinguishing agent manual valve 502, a fire extinguishing agent solenoid valve 503 and a fire extinguishing agent flow control valve 504 which are sequentially arranged on the fire extinguishing agent delivery pipeline 500. One end of the fire extinguishing agent delivery pipeline 500 provided with the fire extinguishing agent pressure reducing valve 501 is connected to the fire extinguishing agent storage device 51, and one end of the fire extinguishing agent delivery pipeline 500 provided with the fire extinguishing agent flow control valve 504 is connected to the fire extinguishing agent inlet 201 on the gas-liquid mixing device 20.

[0067] One end of the fire extinguishing agent delivery pipeline 500 provided with a fire extinguishing agent flow control valve 504 is flange-connected to the fire extinguishing agent inlet 201 on the gas-liquid mixing device 20 .

[0068] The fire extinguishing agent pressure reducing valve 501 is used for reducing pressure, the fire extinguishing agent manual valve 502 is a normally open valve, which is used for emergency stopping of the fire extinguishing agent delivery; the fire extinguishing agent solenoid valve 503 is a normally closed valve, which is opened only when extinguishing a fire, and is used for delivering the fire extinguishing agent; the fire extinguishing agent flow control valve 504 is used for controlling the flow of the fire extinguishing agent, so that the flow of the fire extinguishing agent can be determined.

[0069] When in use, the fire extinguishing agent flow control valve 504, the fire water flow control valve 304 and the foam liquid flow control valve 404 cooperate with each other, so that the fire water, foam liquid and the fire extinguishing agent can be mixed in a certain proportion.

[0070] like Figure 3 , Figure 4 or Figure 5 As shown, in order to facilitate mixing fire water with foam liquid to produce mixed foam liquid and to facilitate mixing mixed foam liquid with fire extinguishing agent to produce mixed fire extinguishing foam liquid, this embodiment is modified on the basis of the above embodiment, and the difference from the above embodiment is that the liquid mixing device 10 includes a liquid mixing body 103 and a first mounting bracket 104, the liquid mixing body 103 is mounted on the first mounting bracket 104, a first flow channel 105 is provided in the liquid mixing body 103, a fire water inlet 100, a foam liquid inlet 101 and a mixed foam liquid outlet 102 are arranged on the liquid mixing body 103, and are respectively communicated with the first flow channel 105, wherein the fire water inlet 100 and the mixed foam liquid outlet 102 are respectively arranged at both ends of the liquid mixing body 103, and the foam liquid inlet 101 is arranged at the top of the liquid mixing body 103;

[0071] A first extension pipe 106 is provided in the foam liquid inlet 101, one end of the first extension pipe 106 is fixedly connected to the inner wall of the foam liquid inlet 101, and the other end extends into the first flow channel 105, and a first inclined section 107 is provided on one end of the first extension pipe 106 located in the first flow channel 105;

[0072] A first blocking member 108 is disposed in the fire water inlet 100 . The first blocking member 108 is connected to the inner wall of the fire water inlet 100 . A first communication port 109 is disposed on the first blocking member 108 . The first communication port 109 is connected to the first flow channel 105 .

[0073] The size of the first communication port 109 is smaller than that of the first flow channel 105 .

[0074] In this embodiment, the first communication port 109 and the first flow channel 105 are both circular, that is, the diameter of the first communication port 109 is smaller than the diameter of the first flow channel 105 .

[0075] When in use, the setting of the first extension tube 106 can make the fire water impact one side of the first extension tube 106 when entering the liquid mixing body 103, thereby generating a vortex, so that after the foam liquid enters the liquid mixing body 103 through the first extension tube 106, it can be better mixed with the fire water that generates the vortex. The setting of the first blocking member 108 can make the first flow channel 105 form a Venturi tube structure under the separation of the first connecting port 109, so that the fire water is accelerated and thus better generates a vortex and mixes with the foam liquid.

[0076] like Figure 4 or Figure 5 As shown, the gas-liquid mixing device 20 includes a gas-liquid mixing body 203 and a second mounting bracket 204, the gas-liquid mixing body 203 is mounted on the second mounting bracket 204, a second flow channel 205 is provided in the gas-liquid mixing body 203, a mixed foam liquid inlet 200, a fire extinguishing agent inlet 201 and a mixed fire extinguishing foam liquid outlet 202 are arranged on the gas-liquid mixing body 203, and are respectively communicated with the second flow channel 205, wherein the mixed foam liquid inlet 200 and the mixed fire extinguishing foam liquid outlet 202 are respectively arranged at two ends of the gas-liquid mixing body 203, and the fire extinguishing agent inlet 201 is arranged at the top of the gas-liquid mixing body 203;

[0077] A second extension pipe 206 is provided in the fire extinguishing agent inlet 201, one end of the second extension pipe 206 is fixedly connected to the inner wall of the fire extinguishing agent inlet 201, and the other end extends into the second flow channel 205;

[0078] A second blocking member 207 is provided in the mixed foam liquid inlet 200 . The second blocking member 207 is connected to the inner wall of the mixed foam liquid inlet 200 . A second communication port 208 is provided on the second blocking member 207 . The second communication port 208 is communicated with the second flow channel 205 .

[0079] The size of the second communication port 208 is smaller than that of the second flow channel 205 .

[0080] In this embodiment, the second communication opening 208 and the second flow channel 205 are both circular, that is, the diameter of the second communication opening 208 is smaller than the diameter of the second flow channel 205 .

[0081] When in use, the setting of the second extension tube 206 can make the mixed foam liquid impact one side of the second extension tube 206 when entering the gas-liquid mixing body 203, thereby generating a vortex, so that after the fire extinguishing agent enters the gas-liquid mixing body 203 through the second extension tube 206, it can be better mixed with the mixed foam liquid that generates the vortex. The setting of the second blocking member 207 can make the second flow channel 205 form a Venturi tube structure under the separation of the second connecting port 208, so that the mixed foam liquid is accelerated and thus better generates a vortex and is better mixed with the fire extinguishing agent.

[0082] In order to prevent secondary deflagration, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the fire extinguishing agent is nitrogen, carbon dioxide, heptafluoropropane or perfluorohexanone.

[0083] Among them, nitrogen and carbon dioxide are both gases at room temperature.

[0084] like Figure 4 As shown, in order to facilitate mixing of nitrogen or carbon dioxide with the mixed foam liquid, when the fire extinguishing agent is nitrogen or carbon dioxide, a second inclined section 209 is provided on one end of the second extension pipe 206 located in the second flow channel 205 .

[0085] When in use, the second inclined section 209 can facilitate nitrogen or carbon dioxide to enter the gas-liquid mixing body 203 through the second extension tube 206 and be better mixed with the mixed foam liquid that generates the vortex.

[0086] Among them, heptafluoropropane and perfluorohexanone are both liquid at room temperature.

[0087] like Figure 5 As shown, in order to facilitate the mixing of heptafluoropropane or perfluorohexanone with the mixed foam liquid, when the fire extinguishing agent is heptafluoropropane or perfluorohexanone, a steering connecting pipe 210 is provided on one end of the second extension pipe 206 located in the second flow channel 205, and an atomizing nozzle 211 is provided at one end of the steering connecting pipe 210, and the other end is connected to the second extension pipe 206. The atomizing nozzle 211 is detachably connected to the steering connecting pipe 210, and the steering connecting pipe 210 is fixedly connected to the second extension pipe 206.

[0088] The diameter of the steering connecting pipe 210 is greater than the diameter of the atomizing nozzle 211 .

[0089] When in use, the mixed foam liquid entering the gas-liquid mixing body 203 impacts the steering connecting tube 210 and the second extension tube 206 to form a vortex and form a cavity at the atomizing nozzle 211. Then, the heptafluoropropane or perfluorohexanone is formed into a mist through the atomizing nozzle 211 and then sprayed out, thereby achieving better mixing of the misted heptafluoropropane or perfluorohexanone with the mixed foam liquid forming the vortex.

[0090] Working principle of this utility model:

[0091] When the utility model is in use, a certain amount of fire water is transported from the fire water storage device 31 to the liquid mixing device 10 through the fire water flow control pipeline 32, and at the same time a certain amount of foam liquid is transported from the foam liquid storage device 41 to the liquid mixing device 10 through the foam liquid flow control pipeline 42, and then the fire water and the foam liquid are mixed through the liquid mixing device 10 to produce a mixed foam liquid, and then the mixed foam liquid is mixed with the fire extinguishing agent through the gas-liquid mixing device 20 to produce a mixed fire extinguishing foam liquid, a certain amount of fire extinguishing agent is transported from the fire extinguishing agent storage device 51 to the gas-liquid mixing device 20 through the fire extinguishing agent flow control pipeline 52, and then the mixed fire extinguishing foam liquid is transported to the spray device 60 through the gas-liquid mixing device 20, and finally the mixed fire extinguishing foam liquid is sprayed to the fire scene through the spray device 60 to extinguish the fire.

[0092] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An anti-explosion foam fire extinguishing system with proportional mixing function, characterized in that: include: A liquid mixing device (10), the liquid mixing device (10) is used to mix fire water and foam liquid to produce mixed foam liquid; A gas-liquid mixing device (20), the gas-liquid mixing device (20) is used to mix the mixed foam liquid and the fire extinguishing agent to produce the mixed fire extinguishing foam liquid; A water source supply device (30), the water source supply device (30) comprising a fire water storage device (31) and a fire water flow control pipeline (32), the fire water flow control pipeline (32) being used for quantitatively transporting fire water; A foam supply device (40), the foam supply device (40) comprising a foam liquid storage device (41) and a foam liquid flow control pipeline (42), the foam liquid flow control pipeline (42) being used for quantitatively conveying the foam liquid; A fire extinguishing agent supply device (50), the fire extinguishing agent supply device (50) comprising a fire extinguishing agent storage device (51) and a fire extinguishing agent flow control pipeline (52), the fire extinguishing agent flow control pipeline (52) being used for quantitatively conveying the fire extinguishing agent; A spray device (60), the spray device (60) is used to spray the mixed fire extinguishing foam liquid to the fire scene; The fire water storage device (31) is connected to one end of the liquid mixing device (10) via a fire water flow control pipeline (32), the foam liquid storage device (41) is connected to one end of the liquid mixing device (10) via a foam liquid flow control pipeline (42), one end of the liquid mixing device (10) is connected to one end of the gas-liquid mixing device (20), the fire extinguishing agent storage device (51) is connected to one end of the gas-liquid mixing device (20) via a fire extinguishing agent flow control pipeline (52), and one end of the gas-liquid mixing device (20) is connected to the spray device (60).

2. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 1, characterized in that: The liquid mixing device (10) is provided with a fire water inlet (100), a foam liquid inlet (101) and a mixed foam liquid outlet (102); the gas-liquid mixing device (20) is provided with a mixed foam liquid inlet (200), a fire extinguishing agent inlet (201) and a mixed fire extinguishing foam liquid outlet (202); the fire water storage device (31) is connected to the fire water inlet (100) on the liquid mixing device (10) via a fire water flow control pipeline (32); the foam liquid storage device (41) is connected to the fire water inlet (100) on the liquid mixing device (10) via a foam liquid flow control pipeline (32); The fire extinguishing agent storage device (51) is connected to the fire extinguishing agent inlet (201) on the gas-liquid mixing device (20) through the fire extinguishing agent flow control pipeline (52), and the mixed fire extinguishing foam liquid outlet (202) on the gas-liquid mixing device (20) is connected to the spray device (60).

3. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 2, characterized in that: The fire water flow control pipeline (32) comprises a fire water delivery pipeline (300) and a fire water manual valve (301), a fire water solenoid valve (302), a fire water pump (303) and a fire water flow control valve (304) which are sequentially arranged on the fire water delivery pipeline (300); one end of the fire water delivery pipeline (300) provided with the fire water manual valve (301) is connected to the fire water storage device (31); and one end of the fire water delivery pipeline (300) provided with the fire water flow control valve (304) is connected to the fire water inlet (100) on the liquid mixing device (10).

4. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 2, characterized in that: The foam liquid flow control pipeline (42) comprises a foam liquid delivery pipeline (400) and a foam liquid manual valve (401), a foam liquid solenoid valve (402), a foam liquid pump (403) and a foam liquid flow control valve (404) which are sequentially arranged on the foam liquid delivery pipeline (400); one end of the foam liquid delivery pipeline (400) provided with the foam liquid manual valve (401) is connected to the foam liquid storage device (41); and one end of the foam liquid delivery pipeline (400) provided with the foam liquid flow control valve (404) is connected to the foam liquid inlet (101) on the liquid mixing device (10).

5. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 4, characterized in that: The fire extinguishing agent flow control pipeline (52) comprises a fire extinguishing agent delivery pipeline (500) and a fire extinguishing agent pressure reducing valve (501), a fire extinguishing agent manual valve (502), a fire extinguishing agent solenoid valve (503) and a fire extinguishing agent flow control valve (504) which are sequentially arranged on the fire extinguishing agent delivery pipeline (500); one end of the fire extinguishing agent delivery pipeline (500) provided with the fire extinguishing agent pressure reducing valve (501) is connected to the fire extinguishing agent storage device (51); and one end of the fire extinguishing agent delivery pipeline (500) provided with the fire extinguishing agent flow control valve (504) is connected to the fire extinguishing agent inlet (201) on the gas-liquid mixing device (20).

6. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 5, characterized in that: The liquid mixing device (10) comprises a liquid mixing body (103) and a first mounting bracket (104); the liquid mixing body (103) is mounted on the first mounting bracket (104); a first flow channel (105) is provided in the liquid mixing body (103); a fire water inlet (100), a foam liquid inlet (101) and a mixed foam liquid outlet (102) are arranged on the liquid mixing body (103) and are respectively connected to the first flow channel (105); wherein the fire water inlet (100) and the mixed foam liquid outlet (102) are respectively arranged at two ends of the liquid mixing body (103); and the foam liquid inlet (101) is arranged at the top of the liquid mixing body (103); A first extension tube (106) is provided in the foam liquid inlet (101), one end of the first extension tube (106) is fixedly connected to the inner wall of the foam liquid inlet (101), and the other end extends into the first flow channel (105), and a first inclined section (107) is provided on one end of the first extension tube (106) located in the first flow channel (105); A first blocking member (108) is provided in the fire water inlet (100), the first blocking member (108) is connected to the inner wall of the fire water inlet (100), and a first communication port (109) is provided on the first blocking member (108), the first communication port (109) is connected to the first flow channel (105).

7. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 6, characterized in that: The gas-liquid mixing device (20) comprises a gas-liquid mixing body (203) and a second mounting bracket (204), wherein the gas-liquid mixing body (203) is mounted on the second mounting bracket (204), a second flow channel (205) is provided in the gas-liquid mixing body (203), a mixed foam liquid inlet (200), a fire extinguishing agent inlet (201) and a mixed fire extinguishing foam liquid outlet (202) are arranged on the gas-liquid mixing body (203) and are respectively connected to the second flow channel (205), wherein the mixed foam liquid inlet (200) and the mixed fire extinguishing foam liquid outlet (202) are respectively arranged at two ends of the gas-liquid mixing body (203), and the fire extinguishing agent inlet (201) is arranged at the top of the gas-liquid mixing body (203); A second extension tube (206) is provided in the fire extinguishing agent inlet (201), one end of the second extension tube (206) is fixedly connected to the inner wall of the fire extinguishing agent inlet (201), and the other end of the second extension tube (206) extends into the second flow channel (205); A second blocking member (207) is provided in the mixed foam liquid inlet (200), the second blocking member (207) is connected to the inner side wall of the mixed foam liquid inlet (200), and a second communication port (208) is provided on the second blocking member (207), the second communication port (208) is connected to the second flow channel (205).

8. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 7, characterized in that: The fire extinguishing agent is nitrogen, carbon dioxide, heptafluoropropane or perfluorohexanone.

9. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 8, characterized in that: When the fire extinguishing agent is nitrogen or carbon dioxide, a second inclined cut surface (209) is provided on one end of the second extension tube (206) located in the second flow channel (205).

10. The anti-explosion foam fire extinguishing system with proportional mixing function according to claim 8, characterized in that: When the fire extinguishing agent is heptafluoropropane or perfluorohexanone, a steering connecting pipe (210) is provided on one end of the second extension pipe (206) located in the second flow channel (205), an atomizing nozzle (211) is provided on one end of the steering connecting pipe (210), and the other end is connected to the second extension pipe (206).

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